I've done this myself for my dad both sided he absolutely love it he showed it to all his friends he has it on his fireplace on a stand.... I recommend this highly brilliant gift for dad, brother and grandad
Portable charger: Small rechargeable battery for charging e.g. smartphones. Supplied with a charging cable with a USB Type A connector at one end and a USB Micro B connector at the other. Input/output: 5 V. Contains one lithium battery with 2600 mAh capacity. Charging time 3 hours. Size 2x8 cm.